Evaluation and Analysis of CFI Schemes with Different Length of Displaced Left-Turn Lanes with Entropy Method

As an unconventional design to alleviate the conflict between left-turn and through vehicles, Continuous Flow Intersection (CFI) has obvious advantages in improving sustainability of roadway. So far, manuals guidelines for CFI are not enough sufficient, especially displaced lane length CFI. And results existing research studies operational, making it difficult put into application. To address this issue, paper presents a methodological procedure determination evaluation based on entropy method considering multiple performance measures sustainable transportation, including traffic efficiency index, environment effect index fuel consumption. VISSIM surrogate safety assessment model (SSAM) were used simulate operational The multi-attribute decision-making (MADM) was adopted determine suitability schemes under different demand patterns. Finally, applied typical congested intersection arterial road with heavy volume high ratio Xi’an, China, showed is reasonable practical. According results, studied intersection, when Volume-to-Capacity (V/C) westbound eastbound lanes less than 0.5, can be selected range 80 170 m. Otherwise, other solutions should considered improve efficiency. simulation case significantly In best case, compared conventional number vehicles increases by 13%, delay, travel time, stops, CO emission, consumption decrease 41%, 29%, 25%, 17%, respectively.